Manifolding attachment



5 Sheets-Sheet 1 Dec. 20, 1932. w. o. MlcHELsEN l MANIFOLDING ATTACHMENT Filed July 9. 1931 Dec. 20, 1932. w. o. MICHELSEN `1,891,567

MANIFOLDING ATTACHMENT Filed July 9. 1951 s sheets-sheet 2 ATTORNEYS Dec. 20, 1932. w. o. MICHELSEN MANIFOLDING ATTACHMENT Filed July 9. 1931 5 Sheets-Sheet 3 INVENTo W MP er,

Patented Dec. 20, 1932 UNI-TED STATES PATENT OFFICE WILLIAM O. MICHELSEN, OF WOODII-IAVEN, NEW YORK, ASSIGNOR TO ROYAL TYPE- WRITEB COMPANY, IN,C OF NEW YORK, N. Y., A CORPORATION OF NEW YORK MANIFOLDLNG ATTACHMENT Application led. July' 9,

rIhis invention relates to new and useful improvements in manifolding attachments for typewriting machines or the like, and embodies certain improvements over `the copending application Serial No. 546,858, filed June 25, 1931, by Myers and Handley relative to the tensioning means for theribbon spools,

' the manually actuated locking meansfor the spools, and the manually actuated means for withdrawing the tensioning means and the locking means away from the spools a dis'- tance sutlicient to permit of the spools being readily removed from or applied tov their sup,- porting shaft without any interference.

Among the several objects of this invention are to provide novel means for supporting ribbon spools on the machine, a constant tensioning means for the-spools, and means' for increasing the tension of the tensioning means to effect a locking of the spools against :feedingl rotation during the feedin'gmovement of thecarbon strips or ribbonsl and preferably prior to thecompletionthereof wherebyl the last portionof the ribbon feeding movement will remove all slack in the1ribwill more fully appear, the nature ofthe invention will be more clearly understood by following'v the description,r the appended claims, and the several views illustrated in' the accompanying drawings.

Figure l isa top plan view ofa typewriting machine constructed in accordance with my invention,

Figure is a rear elevation thereof,

Figure 3 is a view in elevation of the right hand side of the machine, parts thereofvbeing shown in section, y u

yFigure 4 is a vertical sectional view taken 59 -throufrh the work Guide and -the-s ool frame,

s Y s Y p 1931. Serial No. 549,772,v

Figure 5 is a perspective viewof the spool carrying cage, i l

Figure 6 is an enlarged horizontal sectional View through the spool. frame, the spool carrying cage, and the ribbon spools,

Figure 7 is a plan view partly in section of the combined tensioning and locking' means for the spool, the view showing the spools locked against ribbon feeding movement,

Figure S a detail view showing the normal position ofthe cam employed for increasing the tensions onthe spools,

Figure 9 is a longitudinal sectional view showing the springv tension :for'the spool,

Figure l0 is a perspective view of the latch, t

lFigure 11 is a detail section of the track supporting means, and l Figure 12 is a detail section of the spool fra-me, cage, and track. Y

As previously stated, this invention relates to improvements in the ribbon spool tension-` ing andA lockingvmeans shown in the Myers and Handleyapplication filed J une 25, 1931,.

and therefore only that much of the typewriting machine'is illustrated in the drawings as will -be necessary to Y of the present invention..

AThe typewriting machine includes a'main frame A onwhicha carriage B is supportedl for letterspace movements.` A platen C is xed to the lower end. of la colla-ting frame D pivotedgon the carriage to swing forwardly andvrearwardly to effect a rearward andforward movement of the platen .upon swinging movement of the carriage return lever E through suitable connections', shown in said co-pending application. Type bars F cooperate with the'plazten, and aA main ribbon G is disposed'in front ofthe'platen. `Work sheets H are led forwardly to the platen over aV work Vguide I attached to the carriage, thence over a roll-er 5 journaled on the carriage,thence downwardly under a guide roller 6 journaled on the carriage below the platen, andthence upwardly past the platen and havey their upper edge portions clampedfto a truck J which is mountedon the collating frameA D for; line spacing movements, the truck being line spaced by the lever E by a an understanding mechanism shown in said co-pending application. A spool supporting frame K is disposed in rear of the main frame A and is attached to the carriage to move therewith, the frame K carrying rollers 7, 7 which ride along a rail 8 attached to the main frame A.

A plurality of ribbon spools L are rotatably mounted in a cage M which is removably mounted together Iwith the spools as a unit in the spool frame K. The carbon strips or ribbins N are led from the spools forwardly along the left side of the carriage,

. thence along and in front of the platen and in rear of the main ribbon G and in interleaved relation with the work sheets, and thence rearwardly alongthe right hand side of the carriage to a ribbon feeding means 9 which includes cooperating feed rolls 10, 10. The ribbon feeding means 9 is actuated from the collating frame D by connections shown in said co-pending application. Means are providedfor normally and indiidually tensioning the spools against feeding rotation, and manually operative means are provided for actuating the ribbon feeding means and increasing the action of the tensioning means to edect the locking of the spools against feeding rotation prior to the completion of the operation of the ribbon feeding means, whereby the last part of movement of the ribbon feeding means will render the ribbons taut and thereby prevent the work sheets from dragging the ribbons upwardly therewith during line spacing movements of said work sheets.

The ribbon spool frame K comprises front and rear plates or Walls 11 and 12 respectively, the front plate including a horizontal arm 13 and a centrally connected and depending vertical arm 14 which terminates at its lower end in a rearwardly extending horizontal arm 15 having a downturned flange 16 at its rear end which is riveted to the rear plate 12. The rear plate 12 is centrally formed with an opening 17, and the wall at diametrically opposite points of said opening is provided with rearwardly extending upper and lower integral attaching lugs 18 and 19 respectively and having forwardly extending slots 20 and 21 formed therein. Side braces 22, 23 connect the front and rear plates 11 and 12 and are disposed on opposite sides of the opening 17.

Removably mounted in the ribbon spool frame is the ribbon spool cage M which includesl a rectangular frame comprising top and bottom walls 24, 25 and front and rear walls 26, 27. The front and rear walls are respectively formed with alined openings 28 and 29, and removably mounted in said openings is a shaft 30 on which the ribbon spools L are individually and freely mounted for rotation. The rear end of the shaft is formed with an annular groove 31 located adjacent the rear wall 27, and pivoted on said rear wall is a manually releasable latch 32 which is normally held in engagement with the groove by a spring 33 to retain the shaft against longitudinal movements relative `to the cage. The shaft extends rearwardly beyond the latch to form a finger piece' 34 by means of which the shaft may be readily applied to or removed from the cage.

Each spool L includes a metal hub 35 and a core 36, and a peripheral member 37 such as a disc is fixed to the hub and is interlocked with the core by means of a lug 38 pressed from the disc and fitting into a seat 39 formed in the core. A

Attached to the front and rear walls 26 and 27 nf the cage M 'are laterally extending arms 40, 40?, 'and journaled in these arms is a tension shaft 41. Journaled on the shaft 41 between said arms is a plurality of brake shoes or collars 42 to 49, the adjacent faces of adjacent shoes frictionally engaging the opposite faces of the associated disc 37 to normally brake or tension the spool against feeding rotation. For this purpose, two of the collars 44 and 47 are each of two-part telescopic construction and respectively formed with peripheral flanges 50, 51 at their outer ends for receiving therebetween a tension spring 52. These collars are preferably arranged in spaced pairs, collars 42, 43 and 48,

49 being at the ends of the shaft, collars 45,`

46 being in the center of the shaft, tension collar 44 being between collars 43 and 45, and tension vcollar 47 being between collars 46 and 48. Fixed to the end of shaft 41 beyond the arm 40 is a collar or head 53, and adjustable on the other end of the shaft beyond the arm 40 are clamping nuts 54 which-engage said arm 40a. A stationary cam block 55 which is fixed to the outer face of the arm 40 is bored to receive the shaft 41, and is formed in its outer face with a transverse cam groove 56 which is V-shaped in cross section. Journaled on the shaft 41 between the collar 53 and the cam block is a movable or oscillatory cam block 57 having a transverse cam 58 of V-shaped cross section which fits the cam groove 56 and normally lies therein. A laterally extendingV work arm 59 is fixed to the cam block 57, and when said arm is swung, the cam 58 engaging the cam groove 56 will effect a relative longitudinal movement between the shaft 41 and the tension collars 42 to 49 mounted thereon whereby the tensions on the discs 37 will be increased an amount sutlicient to effect a locking of the spools L against ribbon feeding rotation.

In order to removably retain the cage M in proper position in the frame K, the front wall 26 of the cage is provided with a pair of forwardly projecting upper and lower centering pins 60, 61 which engage in upper` and lower openings 62, 63 formed in the vertical arm 14 of the frame K, and upper and lower clamping screws 64, 65 which are threadably engaged with` thetop and bottom walls 24. of the cage Mare engaged in.y

the cage M, the assembled-spools L, andthe tension collars 42 to 49,` tol be readily positioned intothe frame K orremoved therefrom; and. that after the cage M has been removed from said frame K the spools Lmay be readily removed from the cage by withdrawing the shaft therefrom, or spools may be readily threaded onto the shaft, as shown in Figure 5 and the front end of the shaft engaged inthe opening`28 of the front wall 26 of the cage.

In order to swing the rock arm 59 upon swin ingA ofthe Carriage return lever E, and

there y effect a locking of the spools Ll against ribbon feeding rotation, a lever-'66'. is pivoted" as at 67 to the depending arm 14 Vof the spool frame K. This lever 66 extends lat- ?erally under the rock arm59 and a pin. 68

which is fixed to the lever projects under the rock arm and is adapted to swing the latter upwardly upon upward swinging movement of the lever. 'The free end of the lever 66 is connected to the lower end of a link 69 whose from ythe rock shaft 71l is connected to the rear end of a forwardly extending link 73,

and the front end of this link is connected to one arm of a bell crank lever 74 which is pivoted on the left hand side of the carriage adjacent the carriage return lever E, the bell crank lever 74 being actuated by saidv lever E through the medium of a cam head 75`iixed to said lever E. 1

The cam head 75 is provided with peripheral cam surfaces which function, when the carriage return lever E is swung to the right, toy swing the collating frame'D forwardly and the platen C rearwardly, actuate the ribbon feeding means 9, increase the spool tensions to effect a locking of the spools L against feeding rotation, and'to line space the work sheets H.

The carbon strips or ribbons N after leaving the spools L slide over a horizontal rod 76 extending in parallelism with the axis of the spools and secured at one end to the front wall 11 of the spool frame K. The ribbons then respectively pass around .vertical rollers 77 arranged in a line extending fore and aft of the machine and mounted-on a bracket 78 attached lto the left hand side of the carriage B. The ribbons then extend forwardly and thence past the platen C as previously stated. A cover 79- for the rollersv 77 is pivoted to swing; about avert-ical axis` 80 on the bracketA 78 to cover and uncover the rollers 77 thereby n not only retaining the ribbons against working up Vand off the rollers as well as keeping foreign ingredients from contacting ythe rollers, but also permitting of ready access to the rollers when it is desired to thread the ribbons therearound.

- From the foregoing, it will be seen that the constantrtensions on the ribbons prevent theV occurrence of any slack thereon..

In the operation of the invention, the work sheets H are loaded into the machine and the carbon strips or ribbons N are interleaved therewith in front of the platen C and the free ends of the ribbo-ns are engaged between the feed rolls 10, 10 of the feeding means 9, after which the lead-in ends of the work sheets are clamped to the truck J The operator then' writes aline on the work sheets. The-carriage return lever E is then swung to theright, prior to returning the carriage, and during the first part of the swinging move mentof the lever, the collating framefD is swung forwardly and the platen C rearwardly to relieve the normal tight contact relation between the work sheets and the platen. The ribbon feeding means 9 is actuated simultaneously with the forward movement' of the collating frame, and thus the carbon ribbons N are fed against the individual tensioning means which are constantly applied to the ribbon. spools. Prior to the completion of the operation of said feeding means, increased tension is applied to the spool tensioning means in order to lock the lspools against feeding rotation, thereby permitting the last part of the movement of the feeding means to stretch the ribbons fully taut whereby they will not be dragged upwardly with the work sheets during the line spacing previously moved parts, except the truck J, A

will returnto their normal positions.

I claim Y 1. In a typewriting machine, Vthe combination with a rotatable ribbon spool including a disc, of ribbon feeding means, means directly engaging one face` of the disc for tensioning thespool against feeding rotation,

and means for actuating the 'ribbon feeding means and concomitantly increasing the ten"- slon of the tensioning means to-lock the spool against feeding rotation.

2. In a typewriting machine,the combina-iY tion with a rotatable ribbon spool including lli) a disc, of ribbon feedingmeans, and 'spring pressed brake shoes cooperating with the opposite faces of the disc for tensioning thev spool against feeding rotation.

3. In a typewriting machine, the combination with a rotatable ribbon spool including a disc, of ribbon feeding means, and means directly engaging one face of the disc for tensioning the spool against feeding move-V ment comprising a shaft located beyond the periphery of the disc and disposed in parallelism with the axis of the spool, and a pair of spring pressed collars journaled on the shaft and cooperating with the opposite faces of the disc for normally tensioning the spool against feeding rotation. Y

4. In a typewriting machine, the combi-v nation with a plurality of ribbon spools individually rotatable about a common axis and eacli including a disc, a ribbon feeding means, means mounted upon a common support 1ocated beyond the peripheries of the discs and cooperating with one face of each disc for tensioning the spools against feeding rotation, and means for actuating the ribbon feeding means and concomitantly increasing 2 the tension of the tensioning means to lock the spool against feeding rotation.

5. In a typewriting machine, the combination witha plurality of ribbon spools individually rotatable about a common axis and J each including a disc, a shaft located beyond bon feeding means, means for normally tensioning the spool against feeding movement, and means for actuating the ribbon feeding means and for concomitantly operating the tensioning means for increasing the tension to eect a locking of the spool against feeding rotation.

7. In a manifolding typewriter, the combination with a rotatable ribbon spool including a disc, of ribbon feeding means, means directly cooperating with the disc for tensioning the spo-ol against feeding movement, and means for actuating the ribbon feeding means and for concomitantly operating the tensioning means for increasing the tension to effect a locking of the spool against feeding rotation.

8. In a manifolding typewriter, the combination with a rotatable ribbon spool including a disc, of ribbon feeding means, frictional means cooperating with the peripheral portion of the disc for tensioning the spool against feeding movement, and means for actuating the ribbon feeding means and for concomitantly operating the tensioning means for increasing the tension to effect a l0. In a manifolding typewriter, the com-l bination with a rotatable ribbon spool including a disc, of ribbon feeding means, a shaft located beyond the periphery .of the disc and disposed in parallelism `.with the axis of the spool, a pair of spring pressed collars j ournaled on the shaft and cooperating with theopposite faces of the disc for normally tensioning the spool against feeding rotation, and means for increasing the tension of said collars'against the disc to effect a locking of the spool against feeding rotation.

l1. Ina manifolding typewriter, the

combinationl with a rotatable ribbon spool, of.

ribbon feedingmeans, means f'ornormally tensioning the spool against feeding movement, and cam-actuated means cooperating with the tensioning means for increasing the tension to effect a locking of the spool against feeding rotation, and means for actuating the ribbon feeding means and for concomitantly operating the cam-actuated means.

l2. Inra manifolding typewriter, the combination with a rotatable ribbon spool including a disc, of ribbon feeding means, a

shaft located beyond the periphery of the disc and disposed in parallelism with the axisof the spool, a pair of spring pressed collars journaled on the shaft and cooperating with the opposite faces of the disc for normally tensioning the spool against feeding rotation, and cam-actuatedy means mounted on the sha-ft and cooperating with said collars to effect a locking of the spool against feeding rotation. Y

13. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements,

a ribbon spool frame fixed to the carriage to move therewith and including front and rear walls, the rear wall being formed with an opening, and a cage having a plurality of ribbon spools rotatably mounted therein and removably mounted as a unit through said opening in said spool frame.

14. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements, a ribbon spool frame fixed to the carriage to move therewith and including front and rear walls, the rear wall being formed with an opening, and a cage havinga plurality of ribbon spools rotatably mounted therein and removably mounted as a unit through said opening in said spool frame, said cagecom- ETI Cil

prising a rectangular frame including front and rear vertical walls, and centering means cooperating with the front walls of the spool frame and cage.

15. In a inanifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements, a ribbon spool frame fixed to the carriage to move therewith and including front and rear walls, the rear wall being formed withan opening, and a cage having a plurality of ribbon spools rotatably mounted therein and removably mounted as a unit through said opening in said spool frame, said cage com prising a rectangular frame including front and rear vertical walls and a bottom wall, centering means cooperating with the frontwalls of the spool frame and cage, and clamping means cooperating with the bottom wall of the cage and with the spool frame.

16. In a manifolding typewriter, the combinationV with a main frame, of a carriage mounted thereon for letter space movements, a ribbon spool frame fixed to the carriage to move therewith, a rectangular cage removably mounted in said spool frame and including front and rear walls respectively formed with alined openings, a shaft removably mounted in the openings, and a plurality of ribbon spools removably mounted on the shaft between the front and rear walls of the cage.

17. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements, a `ribbon spool frame fixed to the carriage to move therewith, a rectangular cage removably mounted in said spool frame and including front and rear walls respectively formed with alined openings, a shaft removably `mounted in the openings, al plurality of ribbon spools removably mounted on the shaft between the front and rear walls of theV cage, and means cooperating between therear wall of the cage and the shaft for retaining the latter against longitudinal movements relative to the cage.

18. In a manifolding typewriter, the com` bination with a main frame, of a carriage mounted thereon for letter space movements, a ribbon spool frame fixed to the carriage to move therewith, a rectangular cageremovf ably mounted in said frame and including front and rear walls respectively formed with alined openings, a shaft removably mounted in the openings and provided with an annular ygroove adjacent the rear wall of the cage, a plurality of ribbon spools removablymounts led on the shaft between the front and .rear

walls of the cage, and a latch pivoted on the rear wall ofthe cage for cooperation with the groove ofthe shaft to retain rthe latter against longitudinal movements `relative to the cage.

- Y19. In a manifolding typewriter, the coinblnation with a main frame, of la carriage mounted thereon for letter space movements,

ja ribbon spool frame fixed to the carriage to `inove therewith, a rectangular cage removably mounted in said frame and including front and rear walls respectively formed with 'alined openings, a shaft removably mounted in the openings and provided with an annular `grooveadjacent the rear wallof thecage, va.

longitudinal vmovements relative to the cage, f

and a spring connecting the latch and the rear `wall of the cage for yieldably retaining the latch in operative position.

20. Ina typewriting machine, the combination with a main frame, of a carriage mounted thereon for letter space movements, a ribbon spool frame fixedy to the carriage to move therewith, a cage mounted on said` spool frame, a ribbon spool rotatably mount- -ed in the' cage, ribbon feeding means mounted on the carriage, means mounted on the cage for tensioning the spool against feeding rotation, saidcage, spool, and tensioning means being removably mounted as a unit on said y spool frame, and manuallyoperablemeansfor actuating the ribbon feeding means and for concomitantly effecting a locking of the spool against feeding rotation.

21. In a typewriting machine, the combination with a mainframe, of a carriage mount- Y ed thereon for letter space movements, a ribbon spool frame fixed to the carriage'to move therewith, a cage mounted on said spool frame, a ribbon spool rotatably mounted in the cage, ribbon feedingmeans mounted on Ythe carriage, means mounted on the cage for tensioning the spool against feeding rotation, said cage,'spool, and tensioning means being removably mounted asa unit on said spool frame, and manually operable means for actuating the ribbon feeding means and for effectingfa locking of the spool against feeding rotation prior to the completion of the operation of said ribbn feeding means.

22; In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for Vletter space movements and including a platen, a ribbon feeding means mounted on the carriage at one side of 'the platen, a ribbon spool frame located in rear of the main frame and connected to the carriage to move therewith, a cage removably mounted on saidspoolframe, a shaft removfably'mountedon said cage, a plurality of ribbon spools journaled on said'shaft, and means for guiding the ribbons forwardly along the other side of the platen, thence lengthwise of and past the platen, and thence to said feeding means.

23. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding lmeans mounted on the carriage at one side of the platen, a ribbon spool frame located in rear of the main frame and connected to the carriage to move therewith, a cage removably mounted on said spool frame, a shaft removably mounted on said cage, and a plurality of ribbon spools journaled on said shaft, means for guiding the ribbons past the platen to said feeding means, and releasable means for retaining said shaft against longitudinal movement relative to the cage.

24. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage at one side of the platen, a ribbon spool frame located in rear of the main frame and connected to the carriage to move therewith and including front and rear walls, the rear wall being formed with an opening, a cage having a plurality of ribbon spools rotatably mounted therein and removably mounted as a unit `through said opening in said spool frame,

and means for guiding the ribbons forwardly along the other side of the platen, thence lengthwise of and past the platen, and-thence to said feeding means.

25. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage at one side lof the platen, a ribbon spool frame located in rear of the main frame and-connected to the carriage to move therewith, a rectangular cage removably mounted in said frame and including front and rear walls respectively formed withl alined openings, a shaft removably mounted in the openings and provided with an annular groove adjacent the rear wall of the cage, a plurality of ribbon spools removably mounted on the shaft between the front and rear walls of the cage, a latch pivoted on the rear wall of the cage for cooperation with the groove of the shaft to retain the, latter against longitudinal movements relative to the cage, and means for guiding the ribbons past the platen to said feeding means.

26. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage at one side of the platen, a ribbonspool' frame located in rear of the main frame and connected to the carriagev to move therewith, a plurality of ribbon spools rotatably supported on said spool frame and each including a disc, means for guiding the ribbons forwardly along the other side of the platen, thence lengthwise of and past the platen, and thence to the feeding means, a shaft mounted on the spool frame and disposed in parallelism with the axis of the spools, and means mounted on the shaft and frictionally engaging one face of each disc for tensioning the spools against feeding rotation.

27. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage at one side of the platen, a ribbon spool frame located in rear of the main frame and connected to the carriage to move therewith, a plurality of ribbon spools rotatably supported on said spool frame and each including a disc, means for Guiding the ribbons past the platen lto the feeding means, a shaft mounted on the spool frame and disposed in parallelism with the axis of the spools, and a plurality of spring pressed collars mounted on the shaft and frictionally engaging the opposite faces o-f the discs for tensioning the spools against feeding rotation.

28. In a manifolding typewriter, the cornbination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage at one side of the platen, a ribbon spool frame located in rear of the main frame and connected to the carriage to move therewith, a plurality of ribbon spools rotatably supported on said spool frame and each including a disc, means for guiding the ribbons pastv the platen to the feeding means, means mounted on the spool frame and frictionallyl engaging one face of each disc for tensioning the spools against feeding rotation, and manually operable means for actuating the ribbon feedingpmeans and for concomitantly increasing the tension of the tension means to effect a locking of all spools against ribbon feeding rotation.

29. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage at one side of the platen, a ribbon spool frame located in rear of the main frame andconnected to the carriage to move therewith, a plurality of ribbon spools rotatably supported on said v spool frame and each including a disc, means for guiding the ribbons past the platen to the feeding means, means mounted on the spool frame and frictionally engaging one face of each disc for tensioning the spools against feeding rotation, and manually operable means for actuating the ribbon feeding means and for increasing the tension of the tension means prior to the completion of the operation of the ribbon feeding means to eect a locking of all spools against ribbon feeding rotation.

30. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage, a` ribbon spool rotatably mounted on the carriage and including a disc, means for frictionally engaging one face of the disc for tensioning the spool against feeding movement thereof,

- and manually operable means for actuating the ribbon feeding means and for concomitantly increasing the tension of the tensioning means to lock the spool against feeding rotation.

3l. In a manifolding typewriter, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a ribbon feeding means mounted on the carriage, a ribbon spool rotatably mounted on the carriage and including a disc, means for frictionally engaging one face ofthe disc for tensioning the spool against feeding movement thereof, and manually operable means for actuating the ribbon feeding means and for increasing the tension of the tensioning means prior to the completion of the operation of the ribbon feeding means to lock the spool against feeding rotation.

32`. In a typewriting machine, the combination with a rotatable ribbon spool including a disc, of a ribbon feeding means,.

a shaft located beyond the periphery of the disc and disposed in parallelism with the axis 0f the spool, aA spring pressed brake shoe supported on the shaft and directly engaging the disc for tensioning the spool against feeding rotation, and means for actuating the ribbon feeding means and concomitantly increasing the tension of the brake shoe against the disc for locking the spool against feeding rotation. 33. In a typewriting machine, the combination with a main frame element, of a carriage element mounted thereon for letter space movements and including a platen, a table connected to and extending rearwardly from the carriage for guiding work sheets forwardly to the platen, a ribbon spool frame fixedly mounted on one of the elements and located in rear of the main frame element and below the table, and a cage containing a ribbon spool removably mounted as a unit in said spool frame.

34. In a typewriting machine, the combination with a main frame element, of a carriage element mounted thereon for letter space movements and including a platen, a table connected to and extending rearwardl fromithe carriage ,for guiding work sheets Aforwardly to the platen, a ribbon lspool frame lixedly mounted on one of the elements and located in rear of the main frame element and below the table, a rectangular and openj sided cage removably mounted in said spool frame and including front and rear walls, a

vshaft mounted for withdrawal inthe freni and rear walls of the cage, and a ribbon spool detachably mounted on the shaft and removable Yfrom the cage through one side thereof upon removal of the shaft.

85.. In a typewritingmachine, the combination with a main frame element, of a carriage` element vmounted thereon for letter space movements and including a platen, a-table connected to and extending rearwardly from the carriage for guiding work sheets for- -wardly to the platen, a ribbon spool frame mounted for withdrawal in the front and rear walls of the cage, a latch pivoted on the rear wall of the cage land cooperating with the shaft to retain the latter in spool supporting position, and a ribbon spool detachably mounted on the shaft and 4removable froml the cafgethrough one side thereof upon `removal of the shaft.

`36. Ina typewriting machine, the combination with a main frame, of a carriage mounted thereon for letter space-movements .and including a platen, a table connected at its forward end to the carriage and extending rearwardly from the carriage for guiding work sheets forwardly to the platen, a ribbon spool frame iixedly mounted on the carriage to move therewith and located in rear of the main frame and below the table, and a cage containing a ribbon spool removably mounted as a unit in said spool frame.

37. In a typewriting machine, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a table connected at its forward end to the carriage and extending rearwardly from the carriage for guiding work sheets forwardly to the platen, a ribbon spool frame ixedly mounted on the carriage to move therewith and located in rear of the main frame and below the table, a cage containing a ribbon spool removably mountedV ed thereon for letter space movements and including a platen, a table connected at its forward end to the carriage and extending reari wardly from the carriage for guiding work sheets forwardly to the platen, a ribbon spool frame Xedly mounted on the carriage to move therewith and located in rear of the main frame and below the table, a rectangular and open sided cage removably mounted in said spool frame and including front and rear walls, a shaft mounted for withdrawal in the front and rear walls of the cage, and a 10 ribbon spool detachably mounted on the shaft and removable from the cage through one side thereof upon removal of the shaft.

39. In a typewriting machine, the combination with a main frame, of a carriage mounted thereon for letter space movements and including a platen, a table connected at its forward end to the carriage and extending rearwardly -from the carriage for guiding work sheets forwardlyto the platen, a ribbon spool frame iXedly mounted on the 'carriage to move therewith and located in rear of the main frame and below the table, a rectangular and open sided cage removably mounted in said spool frame andincluding front and rear walls, a shaft mounted for withdrawal in the front and rear walls of the cage, a ribbon spool detachably mounted on the shaft and removable from the cage through one side thereof upon removal of the shaft, a track mounted on the main frame and located in rear thereof and below the ribbonspool frame for supporting` the latter, and supporting arms respectively disposed on opposite sides of the ribbon spool cage and connecting the spool frame with the rear end of the table.

In testimony whereof, I have khereunto subscribed my name. K WILLIAM O. kMICHELSENl 

